Discovery of potent, selective, and metabolically stable 4-(pyridin-3-yl) cinnolines as novel phosphodiesterase 10A (PDE10A) inhibitors

E Hu, RK Kunz, S Rumfelt, N Chen, R Bürli, C Li… - Bioorganic & medicinal …, 2012 - Elsevier
We report the discovery of 6,7-dimethoxy-4-(pyridin-3-yl)cinnolines as novel inhibitors of
phosphodiesterase 10A (PDE10A). Systematic examination and analyses of structure–activity-…

Design, optimization, and biological evaluation of novel keto-benzimidazoles as potent and selective inhibitors of phosphodiesterase 10A (PDE10A)

E Hu, RK Kunz, N Chen, S Rumfelt… - Journal of Medicinal …, 2013 - ACS Publications
Our development of PDE10A inhibitors began with an HTS screening hit (1) that exhibited
both high p-glycoprotein (P-gp) efflux ratios in rat and human and poor metabolic stability. On …

Discovery of selective biaryl ethers as PDE10A inhibitors: improvement in potency and mitigation of Pgp-mediated efflux

RM Rzasa, E Hu, S Rumfelt, N Chen… - Bioorganic & medicinal …, 2012 - Elsevier
We report the discovery of a novel series of biaryl ethers as potent and selective PDE10A
inhibitors. Structure–activity studies improved the potency and decreased Pgp-mediated efflux …

Rapid identification of a novel small molecule phosphodiesterase 10A (PDE10A) tracer

…, D Lester-Zeiner, R Cho, S Rumfelt… - Journal of medicinal …, 2012 - ACS Publications
A radiolabeled tracer for imaging therapeutic targets in the brain is a valuable tool for lead
optimization in CNS drug discovery and for dose selection in clinical development. We report …

Discovery of 2-methylpyridine-based biaryl amides as γ-secretase modulators for the treatment of Alzheimer's disease

…, F Chavez Jr, N Chen, F DeMorin, S Rumfelt… - Bioorganic & medicinal …, 2013 - Elsevier
γ-Secretase modulators (GSMs) are potentially disease-modifying treatments for Alzheimer’s
disease. They selectively lower pathogenic Aβ42 levels by shifting the enzyme cleavage …

Initial characterization of a PDE10A selective positron emission tomography tracer [11C] AMG 7980 in non-human primates

DR Hwang, E Hu, S Rumfelt, B Easwaramoorthy… - Nuclear Medicine and …, 2014 - Elsevier
Introduction Phosphodiesterase 10A (PDE10A) is an intracellular enzyme responsible for the
breakdown of cyclic nucleotides which are important secondary messengers in the central …

AMG 580: A novel small molecule phosphodiesterase 10A (PDE10A) positron emission tomography tracer

…, HH Dou, S Talreja, X Zhao, A Chen, S Rumfelt… - … of Pharmacology and …, 2015 - ASPET
Phosphodiesterase 10A (PDE10A) inhibitors have therapeutic potential for the treatment of
psychiatric and neurologic disorders, such as schizophrenia and Huntington’s disease. One …

Use of structure based design to increase selectivity of pyridyl-cinnoline phosphodiesterase 10A (PDE10A) inhibitors against phosphodiesterase 3 (PDE3)

E Hu, RK Kunz, S Rumfelt, KL Andrews, C Li… - Bioorganic & medicinal …, 2012 - Elsevier
We report our successful effort to increase the PDE3 selectivity of PDE10A inhibitor pyridyl
cinnoline 1 using a combination of computational modeling and structural–activity …

Discovery of amido-benzisoxazoles as potent c-Kit inhibitors

RK Kunz, S Rumfelt, N Chen, D Zhang… - Bioorganic & medicinal …, 2008 - Elsevier
Deregulation of the receptor tyrosine kinase c-Kit is associated with an increasing number
of human diseases, including certain cancers and mast cell diseases. Interference of c-Kit …

[PDF][PDF] AMG580: a Novel Small Molecule Phosphodiesterase 10A (PDE10A) PET Tracer

…, S Talreja, X Zhao, A Chen, S Rumfelt… - … of Pharmacology and …, 2014 - cyberleninka.org
Phosphodiesterase 10A (PDE10A) inhibitors have therapeutic potential for the treatment of
psychiatric and neurological disorders, such as schizophrenia and Huntington’s disease. …